JP2019128306A - Electronic timepiece - Google Patents

Abstract

To provide an electronic timepiece that can make a region where a solar battery is not arranged inconspicuous from a front surface side of a dial without providing any shield sheet.SOLUTION: An electronic timepiece 10 has: a dial 11 which has a first region 11c having light transmissivity and also having its reverse surface colored in a first color, and a second region 11d having its reverse surface not colored in the first color; a solar battery 135 arranged at a reverse side of the dial 11 to overlap with a part of the first region 11c and the second region 11d in a plan view; and an antenna body 110 arranged at the reverse side of the dial 11 to overlap at least partially with a region which is in the first region 11c and does not overlap with the solar battery 135.SELECTED DRAWING: Figure 11

Description

  The present invention relates to an electronic watch including an antenna and a solar cell.

  2. Description of the Related Art An electronic watch is known that includes an antenna such as a patch antenna that receives radio waves transmitted from satellites and the like, and a solar battery. Such an electronic timepiece includes a dial having light transparency so as to allow light to be incident on the solar cell. The solar cell is disposed on the back side of the dial, and the antenna body is disposed on the back side of the solar cell.

  In the technique described in Patent Document 1, a cutout is provided in a portion of the solar cell that is disposed above the antenna body in order to prevent a reduction in reception sensitivity due to the solar cell disposed above the antenna body. It is done. And in order to prevent this notch being visually recognized through the dial which has a light transmittance, the shielding sheet is provided between the solar cell and the dial.

JP, 2012-211895, A

  However, in the technology described in Patent Document 1, a member (shielding sheet) that makes the area where the solar cell is not arranged above the antenna body less noticeable is arranged so as to overlap the solar cell in the thickness direction. Therefore, there is a problem that the thickness of the electronic watch is increased.

  The present invention has been made to solve at least a part of the above-described problems, and can be realized as the following modes or application examples.

  Application Example 1 An electronic timepiece according to this application example has a light-transmitting first region in which the back surface is colored with the first color, and the back surface is not colored in the first color. A dial plate having two regions, and a solar cell that is disposed on the back side of the dial and is disposed so as to overlap a part of the first region and the second region in plan view. And an antenna body disposed on the back surface side of the dial and disposed so as to at least partially overlap in the first area and not overlapping the solar cell in plan view. It is characterized by

  According to this application example, the dial is colored on the back surface of the first region including the region that does not overlap with the solar cell. Therefore, the region where the solar cell is not arranged is shielded by the first region and is less noticeable. . Thereby, since it is not necessary to provide a shielding sheet, an increase in the thickness of the electronic timepiece can be suppressed, and the electronic timepiece can be thinned.

  Application Example 2 In the electronic timepiece described in the application example described above, it is preferable that at least one of the front surface and the back surface of the dial is covered with a light-transmitting decorative layer.

  According to this application example, since at least one of the front and back surfaces of the dial is covered with a decorative layer, it is possible to give the dial a color tone and visual effects (matte effect, etc.) that match the design. Thus, the design of the electronic timepiece can be improved. In addition, it is possible to make the area where the solar cell is not placed inconspicuous.

  Application Example 3 In the electronic timepiece described in the application example, it is preferable that a concavo-convex pattern is formed on at least one of the front surface and the back surface of the dial.

  According to this application example, since the concavo-convex pattern is formed on at least one of the front surface and the back surface of the dial, it becomes possible to give the dial a three-dimensional effect or gloss according to the design. It is possible to improve the design of the electronic watch. In addition, since the uneven pattern gives a light reflection effect and a light refraction effect, the reflected light corresponding to the area where the solar cell is not arranged is reflected and refracted above the antenna body, and the area where the solar cell is not arranged is made inconspicuous. be able to.

  Application Example 4 In the electronic timepiece described in the application example described above, the electronic timepiece includes a date indicator holder that is disposed between the solar cell and the antenna body in a cross-sectional view and has a function of pressing the date indicator. The vehicle retainer is preferably configured to cover the first region and the region that does not overlap the solar cell.

  According to this application example, since the dial holder covers the area of the antenna body which does not overlap with the solar cell, even if the first area has a relatively high light transmittance, the solar cell A region that is not arranged can be made inconspicuous.

  Application Example 5 In the electronic timepiece described in the application example, it is preferable that the first region has a fan shape that spreads radially from the center of the dial.

  According to this application example, the design of the dial plate often has a pattern or visual effect that radiates from the center, so that the first region can be included in the design of the dial plate. Even when the area is visually recognized, the deterioration of the design of the electronic watch can be suppressed.

  Application Example 6 An electronic timepiece according to this application example is light transmissive and includes a first region in which a first member of a first color is disposed on the back surface, and the first member disposed on the back surface. A dial having a second region that is not disposed, and disposed on the back side of the dial and disposed so as to overlap a part of the first region and the second region in plan view. A solar cell, and an antenna body disposed on the back surface side of the dial plate and disposed so as to at least partially overlap the first region and a region not overlapping the solar battery in plan view; It is characterized by having.

  According to this application example, since the first member of the first color is disposed on the back surface of the first region including the region that does not overlap with the solar cell, the region where the solar cell is not disposed is the first. It becomes shielded in the area and becomes inconspicuous. Thereby, since it is not necessary to provide a shielding sheet, an increase in the thickness of the electronic timepiece can be suppressed, and the electronic timepiece can be thinned.

FIG. 1 is an overall view of a GPS including an electronic watch according to a first embodiment. FIG. 1 is a perspective view showing the appearance of an electronic watch. Six views showing the appearance of an electronic watch. BRIEF DESCRIPTION OF THE DRAWINGS Sectional drawing which shows the outline of an electronic timepiece. The top view which shows the external appearance of a dial. BRIEF DESCRIPTION OF THE DRAWINGS The schematic plan view which shows the external appearance of an electronic timepiece. Electrical control block diagram of the electronic watch. The top view which shows the external appearance of a solar cell. The top view which shows the external appearance of the state which the solar cell, dial ring receiving ring, the date dial and the date dial pusher overlapped. The top view which shows the external appearance of a ground plane. The fragmentary sectional view which shows the cross section which passes along the antenna body and followed radial direction. The top view which looked at the dial from the back side. 9 is a partial cross-sectional view showing a cross section passing through an antenna body and extending in a radial direction in an electronic timepiece according to Modification Example 1. FIG. 9 is a partial cross-sectional view showing a cross section passing through an antenna body and extending in a radial direction in an electronic timepiece according to Modification Example 1. FIG. FIG. 9 is a partial cross-sectional view showing a cross-section passing through an antenna body and extending in a radial direction in an electronic timepiece according to Modification 2. FIG. 9 is a partial cross-sectional view showing a cross-section passing through an antenna body and extending in a radial direction in an electronic timepiece according to Modification 2. The top view which looked at the dial which concerns on the modification 3 from the back surface side. FIG. 18 is a plan view showing the appearance of a solar cell according to Modification 3; The electronic timepiece which concerns on 2nd Embodiment WHEREIN: The top view which looked at a solar cell, a date dial, and a date dial press from the surface side. The electronic timepiece which concerns on 2nd Embodiment WHEREIN: The partial sectional view which shows the cross section which followed the antenna body and followed the radial direction. The electronic timepiece which concerns on 3rd Embodiment WHEREIN: The partial sectional view which shows the cross section which followed the antenna body and followed the radial direction.

  Hereinafter, preferred embodiments will be described in detail with reference to the accompanying drawings and the like. However, in each of the drawings, the dimensions and the scale of each part are appropriately different from the actual ones. In addition, since the embodiments described below are preferable specific examples, various technically preferable limitations are given, but the invention is not limited to these embodiments.

First Embodiment
The electronic timepiece according to the first embodiment will be described with reference to FIGS. 1 to 18.

<A: Outline of electronic watch>
FIG. 1 is an overall view of a global positioning system (GPS) including an electronic timepiece according to the first embodiment. First, an outline of the GPS will be described in which the electronic watch uses the radio wave as an external signal to obtain position information on the current position and time information.

  As shown in FIG. 1, the electronic timepiece 10 is a wristwatch that receives radio waves (satellite signals) from the GPS satellites 8 and corrects the internal time, and is opposite to the side in contact with the arm (hereinafter referred to as the back). The time is displayed on the side surface (hereinafter referred to as the surface). The GPS satellite 8 is a navigation satellite orbiting in a predetermined orbit above the earth, and transmits a navigation message superimposed on a 1.57542 GHz radio wave (L1 wave) to the ground. In the following description, the 1.57542 GHz radio wave on which the navigation message is superimposed is called a satellite signal. The satellite signal is circular polarization of right-handed polarization.

  There are about 30 GPS satellites 8 (only four are shown in FIG. 1). In order to identify which GPS satellite 8 the satellite signal is transmitted from, each GPS satellite 8 superimposes a unique pattern of 1023 chips (1 ms period) called a C / A code (Coarse / Acquisition Code) on the satellite signal. The C / A code looks like a random pattern, with each chip being either +1 or -1. Therefore, by correlating the satellite signal and the pattern of each C / A code, the C / A code superimposed on the satellite signal can be detected.

  The GPS satellite 8 is equipped with an atomic clock, and the satellite signal includes GPS time information clocked by the atomic clock. The electronic timepiece 10 receives a satellite signal transmitted from one GPS satellite 8, and uses the time (time information) obtained by using GPS time information included therein as the internal time.

  The satellite signal also includes orbit information indicating the position of the GPS satellite 8 in the orbit. The electronic timepiece 10 can perform positioning calculation using GPS time information and orbit information. The positioning calculation is performed on the assumption that the internal time of the electronic timepiece 10 includes a certain degree of error. That is, in addition to the x, y and z parameters for specifying the three-dimensional position of the electronic timepiece 10, the time error is also unknown. For this reason, the electronic timepiece 10 generally receives satellite signals transmitted from four or more GPS satellites 8 and performs positioning calculation using GPS time information and orbit information included therein to determine the current location. Find location information for

Next, a schematic configuration of the electronic timepiece 10 will be described.
FIG. 2 is a perspective view showing the appearance of the electronic timepiece 10, and FIG. 3 is a six-face view showing the appearance of the electronic timepiece 10. As shown in FIG. FIG. 4 is a sectional view schematically showing the electronic timepiece 10.
FIG. 3A is a plan view of the electronic timepiece 10 as viewed from the front side. FIG. 3 (b) is a side view looking at the 9 o'clock direction from the 3 o'clock direction. FIG. 3C is a side view looking at the 6 o'clock direction from the 12 o'clock direction. FIG. 3D is a side view looking from the 9 o'clock direction to the 3 o'clock direction. FIG. 3 (e) is a side view looking at the 12 o'clock direction from the 6 o'clock direction. FIG. 3F is a plan view of the electronic timepiece 10 as seen from the back side. In addition, the electronic timepiece 10 of the present embodiment has a world time function and a chronograph function.

  As shown in FIGS. 2 and 3, the electronic timepiece 10 includes an outer case 30, a cover glass 33, and a back cover 34. The exterior case 30 is configured by fitting a bezel 32 made of ceramic to a cylindrical case 31 made of metal. A ring-shaped dial ring 40 made of resin is disposed on the inner peripheral side of the bezel 32, and a disk-shaped dial 11 is disposed as a time display portion.

  The dial 11 is provided with hands 21, 22, and 23. In the dial 11, from the center, the first small window 70 and the pointer 71 circular in the 2 o'clock direction, the second small window 80 circular in the 10 o'clock direction and the pointer 81 circular in the 6 o'clock direction A third small window 90 and a pointer 91 are provided, and a rectangular day window 15 is provided at 4 o'clock. The dial 11, hands 21, 22, and 23, the first small window 70, the second small window 80, the third small window 90, and the small window 15 are visible through the cover glass 33.

  On the side of the exterior case 30, from the center of the dial 11, an A button 61 is located at the 8 o'clock position, a B button 62 is located at the 10 o'clock direction, a C button 63 is located at the 2 o'clock position, and 4 o'clock. A D button 64 is provided at the position of the direction, and a crown 50 is provided at the position of the 3 o'clock direction. When these A button 61, B button 62, C button 63, D button 64, and crown 50 are operated, an operation signal corresponding to the operation is output.

As shown in FIG. 4, in the electronic timepiece 10, of the two openings of the metal outer case 30, the opening on the front side is closed with the cover glass 33 through the bezel 32, and the opening on the back side is It is closed by a back cover 34 made of metal.
On the inner side of the outer case 30, the dial ring 40 attached to the inner periphery of the bezel 32, the light-transmitting dial 11, the pointer shaft 25 penetrating the dial 11, and the pointer shaft 25 are the center. Driving the circulating hands 21, 22, 23, the solar battery 135, the antenna body 110, the dial receiving ring 126, the main plate 125, the date wheel 130, the date dial holder 131, and the hands 21, 22, 23 Drive mechanism 140 and the like are provided (stored).
The pointer shaft 25 passes through the center of the exterior case 30 in a plan view, and is provided along a central axis extending in the front and back direction.

  The dial ring 40 has the dial plate 11 so that the outer peripheral end is in contact with the inner peripheral surface of the bezel 32 and the flat surface portion whose one surface is parallel to the cover glass 33 and the inner peripheral end is in contact with the dial 11. It has an inclined part inclined to the side. The dial ring 40 has a ring shape in a plan view, and a mortar shape in a cross sectional view.

  The dial 11 is a plate made of resin that displays the time inside the outer case 30. As the resin, polycarbonate, ABS resin, or the like can be used. The dial 11 is disposed below the dial ring 40, and hands 21, 22, and 23 are provided between the dial 11 and the cover glass 33.

FIG. 5 is a plan view showing the appearance of the dial 11.
As shown in FIG. 5, the dial 11 has a substantially circular shape, and a plurality of protrusions 12 for attaching the dial 11 to the dial receiving ring 126 are provided on the outer periphery of the dial 11. Further, at the center of the dial 11, a center hole 13 for passing the pointer shaft 25 is formed. Note that the shape of the dial 11 is not limited to a substantially circular shape, and may be, for example, a tonneau (barrel) shape, a rectangle (rectangular) shape, an oval (elliptical) shape, a square (square) shape, or the like. Moreover, the material of the dial 11 is not limited to resin, for example, what is necessary is just to have light transmittance, such as glass, a shell, and porcelain. For example, white butterfly shells or abalone can be used for shells. Moreover, the thickness of the dial 11 is about 400 to 500 micrometers.

  Returning to FIG. 4, the dial plate 11 includes one surface 11 a on which external light is incident and the other surface 11 b on which external light is emitted. Viewing a member constituting the electronic timepiece 10 from a direction perpendicular to the dial 11 (a direction parallel to the axial direction of the pointer shaft 25) is referred to as a plan view. The direction perpendicular to the dial 11 is also referred to as the thickness direction. Looking at the cross section of the member constituting the electronic timepiece 10 from the direction parallel to the dial 11 (the direction perpendicular to the axial direction of the pointer shaft 25 and the direction perpendicular to the thickness direction) It is called visual. The back cover 34 side with respect to the dial plate 11 is set to the lower side in the thickness direction, and the dial plate 11 side with respect to the back cover 34 is set to the upper side in the thickness direction. FIG. 4 shows an xyz orthogonal coordinate system in which the thickness direction is the z direction (the upper side is the positive side).

  A solar cell (photoelectric cell) 135 is provided in the direction in which external light is emitted to the dial 11 (below the dial 11). The solar cell 135 is disposed between the dial 11 and the main plate 125. The solar cell 135 has a solar cell (photovoltaic power generation element) 135c (see FIG. 8) that performs photoelectric power generation in which light emitted from the dial 11 is incident and converts light energy of the light into electric energy (electric power). The solar cell 135 also has a sunlight detection function.

  In the direction in which external light is emitted to the dial 11 (downward from the dial 11), an antenna 110 for receiving radio waves is provided. The antenna body 110 is disposed below the solar cell 135. For example, a patch antenna (also referred to as a microstrip antenna) is used as the antenna body 110.

  As will be described in detail later, when the solar cell 135c of the solar battery 135 overlaps the antenna body 110 in plan view, the radio wave to be received by the antenna body 110 is shielded by the solar battery 135. In order to suppress such a shield, the solar cell 135 is formed with a notch 135g (see FIG. 8). The antenna body 110 is disposed below the notch 135g, and has a region that does not overlap with the solar cell 135 (at least the solar cell 135c) in plan view.

  A date wheel 130 and a date wheel holder 131 for holding the date wheel 130 are provided below the solar cell 135 and above the antenna 110 and the main plate 125. The date wheel 130 is a ring-shaped flat plate in a plan view, and numerals (not shown) of 1 to 31 are written on the surface along the circumferential direction. The date dial presser 131 has a function of pressing the date dial 130. The date indicator 130 and the date indicator holder 131 are made of resin.

  The dial 11, the solar battery 135, the date indicator holder 131, and the main plate 125 have a hole through which the pointer shaft 25 penetrates, a pointer 71 of the first small window 70, a pointer 81 of the second small window 80, and a third small window 90. And a hole through which a pointer shaft (not shown) of the pointer 91 of the second embodiment passes. In the dial 11 and the solar cell 135, an opening of the day small window 15 is formed.

  The ground plate 125 is formed of resin and has an attachment portion of the drive mechanism 140. The thicker the antenna body 110 (the larger the volume), the better the reception performance. For this reason, in this example, the notch part 125g is provided in the ground plane 125, and the range in which the antenna body 110 is disposed in the thickness direction is overlapped with the range in which the ground plane 125 is disposed in the thickness direction. The thickness of the antenna 110 is secured (that is, by arranging the antenna 110 to the same height as the ground plate 125).

  The drive mechanism 140 is attached to the ground plate 125 and is covered by the circuit board 120 from the back side. The drive mechanism 140 has a step motor and a wheel train such as a gear, and the hands 21, 22 and 23 are driven by the step motor rotating the needle shaft 25 via the wheel train. 2 and 3, the pointer 71 of the first small window 70, the pointer 81 of the second small window 80, and the pointer 91 of the third small window 90 also have a similar drive mechanism (not shown). The pointers 71, 81, 91 are driven.

  The circuit board 120 includes a receiver (GPS module) 122, a controller 150, and an antenna 110. The circuit board 120 is connected to a secondary battery (not shown) such as a lithium ion battery that is charged with electric power generated by the solar battery 135. A circuit retainer 123 is provided below the circuit board 120.

<B: Electronic watch display function>
Next, the display function of the electronic timepiece 10 will be described.
FIG. 6 is a schematic plan view showing the appearance of the electronic timepiece 10. As shown in FIG.
As shown in FIG. 6, on the dial ring 40, a scale that divides the inner circumference into sixty to sixty divisions and a 1/5 scale that divides the scale into five divisions are described. Using this scale, the pointer 21 displays the "second" of the chronograph function, the pointer 22 displays the "minute" of the internal clock, and the pointer 23 displays the "hour" of the internal clock. The chronograph function can be used by operating the C button 63 and the D button 64.

  On the outer periphery of the circular first small window 70 provided on the dial 11, a scale that divides the outer periphery into 60 divisions and numbers in increments of 10 from “10” to “60” are written. The pointer 71 uses this scale to display the "minute" of the chronograph function.

On the outer periphery of the circular second small window 80 provided on the dial 11, a scale that divides the outer periphery into 60 parts and numbers from "0" to "11" are written. The pointer 81 displays the "seconds" of the internal clock using this scale.
The alphabet "Y" is written at the 52-second position of the second small window 80, and the alphabet "N" is written at the 38-second position. The alphabet indicates the reception result of the satellite signal (Y: reception success, N: reception failure) and the setting of the satellite signal automatic reception (Y: automatic reception ON, N: automatic reception OFF). When the user operates the B button 62, the pointer 81 indicates either "Y" or "N", and the satellite signal reception result is displayed. The user can set ON / OFF of automatic reception of satellite signals by operating the A button 61 and the B button 62 and setting the pointer 81 to “Y” or “N”. When the user operates the B button 62 to cause the electronic timepiece 10 to manually receive a satellite signal, the pointer 71 displays the number of satellites captured.
In the present embodiment, the notation of “Y” is provided at the position of 52 seconds, and the notation of “N” is provided at the position of 38 seconds, but the present invention is not limited to this. It is preferable that the notations “Y” and “N” be provided at easily viewable positions according to the position where the small window including the reception result display is provided.

The outer periphery of the circular third small window 90 provided on the dial 11 will be described. In the following description of the range of the outer circumference, although it is referred to as “n-time direction” (n is an arbitrary natural number), this is the direction when the circular outer circumference is viewed from the center of the third small window 90.
On the outer periphery of the range from the 12 o'clock direction to the 6 o'clock direction of the third small window 90, a scale dividing this range into six and numerals from "0" to "5" are described. The pointer 91 displays “hour” of the chronograph function using this scale. In the chronograph function, it is possible to measure time up to 5 hours, 59 minutes, and 59 seconds using the hands 21, 71, 91.

  On the outer periphery of the third small window 90 in the range from 6 o'clock to 7 o'clock, the letter “DST” and the symbol “◯” are written. DST (daylight saving time) means daylight saving time. These letters and symbols represent the setting of daylight saving time (DST: daylight saving time ON, ○: daylight saving time OFF). When the user operates the crown 50 and the B button 62 to set the pointer 91 to “DST” or “o”, the electronic timepiece 10 can be set to ON / OFF of summer time.

  On the outer periphery of the third small window 90 in the range from 7 o'clock to 9 o'clock, a crescent sickle-shaped symbol 92 is formed along the circumference, with the base end in the 9 o'clock direction being thick and the tip in the 7 o'clock direction being thin. It is written. This symbol 92 is a power indicator, and the pointer 91 indicates one of the proximal end, the distal end, and the middle depending on the remaining battery level.

  On the outer periphery of the third small window 90 in the range from 9 o'clock to 10 o'clock, an airplane-shaped symbol 93 is written. This symbol represents the in-flight mode. At the time of take-off and landing of the aircraft, reception of satellite signals is prohibited by the Aviation Law. The user can stop the reception of the satellite signal of the electronic timepiece 10 by operating the A button 61 and selecting the symbol 93 (in-flight mode) with the hands 91.

  On the outer periphery of the third small window 90 in the range from the 10 o'clock direction to the 12 o'clock direction, a number “1” and a symbol “4+” are written. These numbers and symbols represent the reception mode of the satellite signal. “1” means that GPS time information has been received and internal time has been corrected, “4+” means that GPS time information and orbit information have been received, and the internal time and the time zone described later have been corrected . When the user operates the B button 62, the hands 91 indicate “1” or “4+”, and the reception mode of the satellite signal received immediately before by the electronic timepiece 10 is displayed.

  The small sun window 15 is provided at an opening portion in which the dial 11 is opened in a rectangular shape, and one of the numerals written on the date dial 130 can be visually recognized from the opening portion. This number represents the "day" of the date.

Here, the relationship between Coordinated Universal Time (UTC), time difference, standard time, and time zone will be described.
The time zone is an area using a common standard time, and currently 40 types of time zones exist. Each time zone is distinguished by a time difference between standard time and UTC. For example, Japan belongs to a time zone of +9 hours which uses standard time which is 9 hours ahead of UTC. The standard time used in each time zone can be determined by UTC and the time difference between UTC.

As described above, the dial 11 is engraved with a scale indicating 60 minutes and seconds, and the dial ring 40 surrounding the outer periphery of the dial 11 has a time difference from UTC along the scale. The time difference information 45 representing “” is represented by numerals and symbols other than numerals. The time difference information 45 of numbers is an integer time difference, and the time difference information 45 of a symbol indicates that it is a time difference other than an integer. The time difference between the internal time displayed by the hands 22, 23, 81 and the UTC can be confirmed by the time difference information 45 pointed by the hand 21 by the operation of the crown 50.
The electronic timepiece 10 can represent internal times corresponding to a maximum of 60 different time differences by assigning a temporary difference to one scale of the 60 divided scales provided in the dial ring 40. In the present embodiment, the time difference information 45 of the “UTC” symbol represents the world coordinated time, which is the standard of the time difference, and the time difference information 45 of the “•” symbol represents a time difference other than an integer. May be used to indicate.

  In the present embodiment, the time difference information 45 of the “·” symbol written between the numbers “8” and “9” on the dial ring 40 represents a time difference of +8.75 hours (+8 hours 45 minutes). , Means UTC + 8.75 hours as the standard time zone. There are about 40 types of time zones. In the dial ring 40 of the electronic timepiece 10 according to the present embodiment, time differences representing 40 types of time zones are written as time difference information 45. The time zone display is preferably within 60 types. If the number exceeds 60, the display may be small and it may be difficult to determine.

  In the bezel 32 provided around the dial ring 40, city information 35 representing the representative city name of the time zone using the standard time corresponding to the time difference of the time difference information 45 written on the dial ring 40, It is written along with the time difference information 45. In the present embodiment, the city information 35 is described using a three letter code in which a city name is abbreviated by a three-letter alphabet. "LON" is London, "PAR" is Paris, "CAI" is Cairo, "JED" is Jedda, "DXB" is Dubai, "KHI" is Karachi, "DEL" is Delhi, "DAC" is Dhaka, "BKK" "Bangkok", "BJS" Beijing, "TYO" Tokyo, "ADL" is Adelaide, "SYD" is Sydney, "NOU" is Nemea, "WLG" is Wellington, "TBU" is Nukualofa, "CXI" is Kirisima Si Island, “MDY” is Midway, “HNL” is Honolulu, “ANC” is Anchorage, “LAX” is Los Angeles, “DEN” is Denver, “CHI” is Chicago, “NYC” is New York, “CCS” is Caracas, “SCL” for Santiago, “RIO” for Rio de Janeiro, “FEN” for Fernando de Noronha, “PD "I represent the Azores, respectively. For example, the code “TYO” represents Tokyo, and the number “9” in the time difference information 45 written on the dial ring 40 corresponding to this code makes it easy for Tokyo to use UTC + 9 hours standard time. Can be judged. Also, the code of "CXI" represents Kyrisy Masy Island, and from the number "14" of the time difference information 45 written along with the dial ring 40 corresponding to this code, Kyrisy Masy Island uses UTC + 14 hours standard time. Can be easily determined. In the present embodiment, the representation of the representative city names corresponding to the time differences of some of the time difference information 45 is omitted in order to limit the display space and improve the visibility. Moreover, the representation method of a representative city name is an example, and may be represented by other methods. The notation of the time difference information 45 and the city information 35 is referred to as a time zone display 46. In this embodiment, a time zone display 46 equal to the number of time zones used all over the world is shown. In addition, the above-mentioned notation of the city name is an example, and the city name may be appropriately changed according to the change of the time zone.

<C: Electrical configuration of electronic watch>
Next, the electrical configuration of the electronic timepiece 10 will be described.
FIG. 7 is an electric control block diagram of the electronic timepiece 10.
As shown in FIG. 7, the electronic timepiece 10 includes a control unit 150 having a basic configuration of a CPU (Central Processing Unit) 153, a RAM (Random Access Memory) 154, and a ROM (Read Only Memory) 155, and a receiving unit (GPS module). 122, an input device 157, and peripheral devices of the drive mechanism 140. Each of these devices transmits and receives data via the data bus 159. The input device 157 is the crown 50, the A button 61, the B button 62, the C button 63, and the D button 64 shown in FIG. The electronic timepiece 10 incorporates a rechargeable secondary battery (not shown) as a power source.

  The receiving unit 122 includes an antenna 110 and processes satellite signals received via the antenna 110 to acquire GPS time information and position information. The antenna body 110 receives radio waves of satellite signals transmitted from a plurality of GPS satellites 8 (see FIG. 1) orbiting the earth over a predetermined orbit and passing through the cover glass 33 shown in FIG.

  Then, although not shown, the receiver 122 receives a satellite signal transmitted from the GPS satellite 8 (see FIG. 1) and converts it into a digital signal as in a normal GPS device, and an RF (Radio Frequency) unit and GPS time information and position information (positioning information) are acquired from the BB unit (base bump unit) that performs correlation determination of received signals and demodulates the navigation message, and the navigation message (satellite signal) demodulated by the BB unit. And an information acquisition unit for outputting the information. That is, the receiving unit 122 functions as a receiving unit that receives a satellite signal transmitted from the GPS satellite 8 and outputs GPS time information and position information based on the reception result.

  The RF unit includes a bandpass filter, a PLL circuit, an IF filter, a VCO (Voltage Controlled Oscillator), an ADC (A / D converter), a mixer, an LNA (Low Noise Amplifier), an IF amplifier, and the like. The satellite signal extracted by the bandpass filter is amplified by the LNA, mixed with the VCO signal by the mixer, and down-converted to IF (Intermediate Frequency). The IF mixed by the mixer passes through an IF amplifier and an IF filter, and is converted to a digital signal by an ADC.

  The BB unit generates a local code generating unit that generates a local code composed of the same C / A code as that used at the time of transmission by the GPS satellite 8, and a correlation value between the local code and a reception signal output from the RF unit. And a correlation unit to calculate. If the correlation value calculated by the correlation unit is equal to or greater than a predetermined threshold, the C / A code used for the received satellite signal matches the generated local code, and the satellite signal is It can be captured (synchronized). For this reason, the navigation message can be demodulated by correlating the received satellite signal with the local code.

  The information acquisition unit acquires GPS time information and position information from the navigation message demodulated by the BB unit. The navigation message includes preamble data, HOW word TOW (Time of Week, also referred to as “Z count”), and subframe data. The subframe data is from subframe 1 to subframe 5, and in each subframe, for example, satellite correction data including week number data and satellite health data, etc., ephemeris (detailed orbit information for each GPS satellite 8 And almanac (general orbit information of all GPS satellites 8) and the like are included. Therefore, the information acquisition unit can acquire GPS time information and navigation information by extracting a predetermined data portion from the received navigation message.

The RAM 154 and the ROM 155 are storage units of the electronic timepiece 10.
The ROM 155 stores programs executed by the CPU 153, time zone information, and the like. The time zone information is data for managing position information (latitude / longitude) of an area (time zone) using a common standard time, and a time difference with respect to UTC.
The CPU 153 uses the RAM 154 as a work area, and executes programs stored in the ROM 155 to perform various operations, controls, and timekeeping. This timing is performed, for example, by counting the number of reference signal pulses from an oscillation circuit (not shown).

  The CPU 153 includes time information calculated from GPS time information and time correction parameters, current position information (latitude and longitude) calculated from GPS time information and orbit information, and a time zone stored in the ROM 155 (storage unit). Modify the internal clock based on the information. The CPU 153 performs control to drive the drive mechanism 140 so that the internal time is displayed. As a result, the internal time is displayed on the electronic timepiece 10 by the hands 22, 23, 81 (see FIG. 6).

<D: Details of internal configuration>
Next, the internal configuration of the electronic timepiece 10 will be described in more detail.

  FIG. 8 is a plan view showing the appearance of the solar cell 135. FIG. 8 also shows the outline of the antenna body 110. Hereinafter, the case where the antenna body 110 which has rectangular planar shape is arrange | positioned at 12 o'clock is illustrated.

  The solar cell 135 has a solar film 135 b. In addition to the solar film 135b, the solar cell 135 has a guide plate provided with a positioning portion when the solar cell 135 is attached to another member (for example, the ground plate 125 or the dial plate receiving ring 126). In addition, when the positioning part is provided in the solar film 135b, it is not necessary to provide a guide plate.

  The solar film 135b includes a substrate 135e and a solar cell 135c. The substrate 135e is formed of, for example, a resin film, and the solar cell 135c is formed on the substrate 135e. The solar cell 135c has a semiconductor portion and an electrode portion. The semiconductor unit performs photovoltaic generation to convert light energy into electrical energy. The electrode portion has electrodes arranged with the semiconductor portion interposed therebetween. As the electrode on the light incident side, a light transmissive electrode can be used.

  The solar cell 135 has a substantially circular outer shape. A plurality (eight in this example) of solar cells 135c are arranged side by side in the circumferential direction of the circle and are connected in series. The solar cell 135 has a rectangular notch 135g at 12 o'clock so that the antenna body 110 is disposed so as to have a region that does not overlap with the solar cell 135 (at least with the solar cell 135c) in plan view. It is formed. The substrate 135 e and the solar cell 135 c are cut out in the cutout portion 135 g. The range of the notch 135g is a range inside the virtual outline 135h assuming a state in which the solar cell 135 remains substantially circular, that is, a state in which the notch 135g is not formed in the solar cell 135. Do.

  If the electrode part of the solar cell 135c overlaps the antenna body 110 in plan view, the radio wave of the satellite signal that the antenna body 110 should receive is shielded. Such a shield can be suppressed by having a region where the antenna 110 does not overlap the solar cell 135 c in plan view.

  In addition, in order to provide the area | region where the antenna body 110 does not overlap with the solar cell 135c in plan view, the case where the notch part 135g by which the outer peripheral part of the solar cell 135 was notched is provided is illustrated. An area where the antenna body 110 does not overlap with the solar cell 135c in plan view may be provided by providing an opening (through-hole) inside the battery 135.

  It is most preferable that the entire antenna body 110 does not overlap with the solar cell 135c in a plan view. However, even when a part of the antenna body 110 overlaps with the solar cell 135c, the antenna body 110 The above-described shield can be suppressed as compared to the case where all of them overlap with the solar cell 135c.

  A guide tab 135b-1, a guide tab 135b-2, and a conduction portion 135d are provided on the outer peripheral portion of the substrate 135e. The guide tabs 135 b-1 and the guide tabs 135 b-2 are used as positioning portions when positioning the solar cell 135 with respect to the ground plate 125. The conductive portion 135 d is used as a placement portion of a conductive spring that electrically connects the solar cell 135 with the circuit board 120.

  FIG. 9 is a plan view showing the appearance of a state in which the solar cell 135, the dial support ring 126, the date dial 130 and the dial presser 131 overlap, and the internal configuration of the electronic timepiece 10 (configuration on the back side of the dial 11). Is viewed from the front side. FIG. 9 also shows the outline of the antenna body 110.

  As shown in FIG. 9, the dial plate receiving ring 126 is provided with a solar cell hook portion 126a, a ground plate receiving portion 126f, and a protruding portion 126m. The solar cell hook portion 126 a is used to fix the solar cell 135 to the dial plate receiving ring 126. The engaging part (not shown) provided in the above-mentioned guide plate is latched by the solar cell hook part 126a. A hook 125f (see FIG. 10) provided on the main plate 125 is fitted into the main plate receiving portion 126f, and the main plate 125 is fixed to the dial plate receiving ring 126. The protruding portion 126m protrudes from the bottom surface of the dial receiving ring 126 toward the back cover 34. When the dial receiving ring 126 is stored in the exterior case 30, the protruding portion 126m hits the back cover 34. Control the movement of the body in the thickness direction.

  A part of the date wheel 130 and the date wheel holder 131 is exposed at the notch 135 g of the solar cell 135. That is, a part of the antenna body 110 disposed so as to overlap the notch 135g is covered with the date indicator 130 and the date indicator holder 131 when viewed from the front side.

  The date dial presser 131 is disposed on the inner peripheral side (the pointer shaft 25 side) with respect to the date dial 130. The outer peripheral end of the date dial holder 131 rides on the inner peripheral end of the date dial 130 in a bowl shape and defines the range of play in the vertical direction of the date dial 130. The date wheel holder 131 holds the date wheel 130 in this manner.

  FIG. 10 is a plan view showing the appearance of the main plate 125. As shown in FIG. The outline of the antenna 110 is also shown in FIG.

  As described above, the ground plate 125 has a rectangular notch 125g formed at the 12 o'clock position so that the antenna body 110 can be arranged up to the same height as the ground plate 125 and the thickness of the antenna body 110 can be secured. There is.

  If the thickness of the antenna 110 having sufficient reception performance can be obtained without arranging the antenna 110 to the same height as the ground plate 125, the notch 125g may not be provided on the ground plate 125. The ground plate 125 may be formed of metal as needed. When the ground plate 125 is made of metal, the shield as described above can be suppressed by providing the notch 125g. The notch 125g in this example is provided so that the entire antenna body 110 does not overlap the ground plate 125 in plan view. However, the notch 125g may be a part of the antenna body 110 as necessary. May be provided so as to overlap with the main plate 125 in plan view.

  The base plate 125 is provided with a guiding protrusion 125a, a dial height determining protrusion 125b, a fixing pin 125c, and a flange 125d provided with the fixing pin 125c. The guiding tab 135b-1 of the solar cell 135 and the guiding tab 135b-2 are disposed so as to sandwich the guiding projection 125a, whereby the solar cell 135 is positioned with respect to the main plate 125, and Movement in the direction is restricted. The dial plate height determining convex portion 125 b and the flange portion 125 d constitute a dial board riding surface on which the dial 11 is placed. The fixing pin 125 c is fitted to the hole of the dial ring 40 to fix the dial ring 40.

  The ground plate 125 is also provided with a through hole 125 e, a weir 125 f, and a protrusion 125 k provided at the tip of the weir 125 f. A conduction spring for electrically connecting the solar cell 135 and the circuit board 120 is disposed in the through hole 125 e. The base plate 125 and the dial plate receiving ring 126 are engaged with each other by fitting the collar 125f to the base plate receiving portion 126f of the dial plate receiving ring 126. The protrusion 125k restricts the movement of the ground plate 125 in the planar direction by hitting the inner peripheral surface of the case 31 when the ground plate 125 is stored in the exterior case 30.

Next, the configuration of the dial 11 will be described.
FIG. 11 is a partial cross-sectional view showing a cross section along the AA direction (radial direction) of FIG. 9 through the antenna body 110 (notch portion 135 g), and shows a configuration including the dial 11. FIG. 12 is a plan view of the dial 11 as viewed from the back side.

  Since the dial 11 of the electronic timepiece 10 has optical transparency, the notch 135 g of the solar cell 135 is easily visible through the dial 11. For this reason, in the electronic timepiece 10 of the present embodiment, the region of the back surface of the dial 11 that overlaps the notch 135g is colored so that the notch 135g is not conspicuous.

  As shown in FIGS. 11 and 12, the dial 11 includes a first region 11c that is colored on the back surface and a second region 11d that is not colored on the back surface. Hereinafter, the part formed on the back surface of the first region 11c by the coloring process is also referred to as a colored part 11x.

  The first region 11c (colored portion 11x) has a substantially rectangular shape in plan view, like the notched portion 135g where the solar cell 135 is not disposed. The first region 11c is arranged in a wider area than the notch 135g so as to cover the entire region of the notch 135g, and the peripheral portion of the first region 11c overlaps with the solar cell 135. Yes. That is, the solar cell 135 overlaps the second area 11 d of the dial 11 and a part of the first area 11 c. However, since the amount of light incident on the solar cell 135 is reduced when the overlapping range of the solar cell 135 and the first region 11c is widened, the size of the first region 11c takes into account errors during the coloring process and assembly. It is desirable to make the range wider than the notch 135g by the amount. Also, as described above, since the solar cell 135 has the notch 135g, the antenna 110 has a region (exposed portion) that does not overlap with the solar cell 135 in plan view. At least the exposed portion of 110 overlaps the first region 11c in plan view.

  The colored portion 11x is colored so as to have a color tone substantially the same as the color tone (dark purple) of the solar cell 135c of the solar cell 135 so that the cutout portion 135g does not stand out. However, since the solar cell 135 is disposed close to the dial plate 11, the colored portion 11 x is in close contact with the dial plate 11, and thus the color tone of the colored portion 11 x is substantially the same as that of the solar cell 135. Even so, it is assumed that the first region 11 c is conspicuous when viewed from the front side of the dial 11. In this case, it is desirable to make the first region 11c less noticeable by adjusting the color tone and light transmittance of the colored portion 11x in advance. That is, the color tone of the coloring portion 11x is not limited to the same color tone as that of the solar cell 135c of the solar battery 135, and may be any color tone that makes the cutout portion 135g less noticeable when viewed from the front side of the dial plate 11. Note that the color of the coloring portion 11x corresponds to the first color. Furthermore, the colored portion 11x may not have light transmittance. Most of the first region 11c is assumed to overlap the notch 135g, so even when the colored portion 11x does not have light transmission, the electrical energy necessary for driving the electronic timepiece 10 is Can be secured. With the above configuration, the cutout portion 135g is shielded by the first region 11c and is less noticeable.

  The coloring to the first region 11c, that is, the formation of the colored portion 11x can be performed by screen printing. At this time, the ink used is assumed to be acrylic or urethane ink. Moreover, when performing screen printing, the thickness of the coloring part 11x is about 2-6 micrometers. Moreover, it can also color by coating in the state which masked the range except the 1st area | region 11c of the back surface of the dial 11, and peeling masking after that. Further, the coloring method is not limited to screen printing or painting, and other methods may be used. Similarly, colorants are not limited to inks and paints, and other colorants may be used. Further, the ink is not limited to, for example, the above acrylic or urethane type, and various inks may be used. Further, the second region 11d does not need to be a region that is not colored, and may be colored with a color tone different from that of the first region 11c as long as it has light transparency.

  As described above, according to the configuration according to the present embodiment, the following effects can be obtained.

  According to the present embodiment, in the dial plate 11, the back surface of the first region 11 c that overlaps the notched portion 135 g of the solar cell 135 is colored, so that the notched portion 135 g is shielded by the first region 11 c and is not noticeable. Become. Thereby, since it is not necessary to provide a shielding sheet for making the notch 135g inconspicuous, an increase in the thickness of the electronic timepiece 10 can be suppressed, and the electronic timepiece 10 can be thinned.

  Various modifications and improvements can be added to the above-described embodiment. A modification is described below.

(Modification 1)
Hereinafter, the structure which concerns on the modification 1 is demonstrated. In addition, about the component same as 1st Embodiment, the same number is attached | subjected and the overlapping description is abbreviate | omitted.

FIG. 13 and FIG. 14 are partial cross-sectional views showing a cross section along the radial direction through the antenna 110 in the electronic timepiece 10 according to the first modification.
As shown in FIG. 13, the dial 11 according to the modification 1 is different from that of the first embodiment in that a decorative layer 11 e is formed on the surface. The decorative layer 11 e is assumed to be a light-transmissive coating layer for changing the color tone of the dial 11. In addition, it may be a coating layer (for example, a matte coating layer) for changing the gloss of the dial 11. Furthermore, it may be a vapor deposition layer of a highly reflective film utilizing the difference in refractive index from that of the dial 11. The decorative layer 11 e is not limited to the above-described coating layer or vapor deposition layer, and may be any one as long as it decorates the dial 11. Moreover, it is not limited to said coating and vapor deposition also about a decoration method, You may use another method.

  The decoration layer 11e does not necessarily have to be formed on the entire surface of the dial 11. For example, the decorative layer 11e may be formed only on the inner side of the first small window 70, the second small window 80, and the third small window 90.

  Moreover, it is good also as a structure containing several layers in the thickness direction. For example, it is possible to form a decorative layer 11e having a three-layer structure including a colored coating layer, a matte coating layer, and a scale printing layer sequentially from the lower side on the surface of the dial 11.

  Further, the plurality of decorative layers 11 e may be formed in a direction parallel to the dial 11. For example, on the surface of the dial 11, the inside of the first small window 70, the second small window 80, and the third small window 90 is a colored coating layer having a high light transmittance, and the outside of these small windows is a light coating layer. It is also possible to use a colored coating layer having low permeability.

  As described above, according to the configuration according to this modification, in addition to the effects in the first embodiment, the following effects can be obtained.

  According to this modification, since the decorative layer 11e is formed on the surface of the dial 11, it becomes possible to give the dial 11 a color tone or a visual effect (such as a matting effect) according to the design. As a result, the design of the electronic timepiece 10 can be improved.

  In addition, although the light transmittance of the dial 11 will fall by forming the decoration layer 11e, the light transmittance of the solar cell 135 which can maintain the production | generation of the electrical energy required for the drive of the electronic timepiece 10 is possible. As long as it has. Moreover, the notch part 135g of the back side of the dial 11 can be made more inconspicuous by the light transmittance fall.

  Further, as shown in FIG. 14, the decorative layer 11 f may be formed on the back surface of the dial 11. When the decorative layer 11f is formed on the back surface of the dial 11, the decorative layer 11f cannot be directly visually recognized. However, as in the case where the decorative layer 11e is formed on the front surface, the color of the dial 11 is changed. Or give a visual effect. Further, the decorative layers 11e and 11f may be formed on both the front and back surfaces of the dial 11.

(Modification 2)
Hereinafter, the structure which concerns on the modification 2 is demonstrated. In addition, about the component same as 1st Embodiment, the same number is attached | subjected and the overlapping description is abbreviate | omitted.

FIG. 15 and FIG. 16 are partial cross-sectional views showing a cross section along the radial direction through the antenna 110 in the electronic timepiece 10 according to the second modification.
As shown in FIG. 15, the dial 11 according to the second modification is different from the first embodiment in that a concavo-convex pattern 11g is formed on the surface. As the concavo-convex pattern 11g, a fold pattern, a streak pattern, a swirl pattern, a radiation pattern, and the like spreading from the center of the dial 11 are assumed. Further, the uneven pattern 11g is not limited to the above pattern, and may be a pattern other than the above. In addition, when the dial 11 is made of resin, the concavo-convex pattern 11 g is formed on the dial 11 by performing molding using a mold in which a predetermined pattern is processed. In addition, the formation method of the uneven | corrugated pattern 11g is not restricted above, A various method can be used. For example, by applying a rotated brush to the flat dial plate 11 from the center of the dial plate, a radial concavo-convex pattern 11 g spreading from the center of the dial plate 11 may be formed.

  The uneven pattern 11g is not necessarily formed on the entire surface of the dial plate 11. For example, the concavo-convex pattern 11 g may be formed only on the inner side of the first small window 70, the second small window 80, and the third small window 90.

  Moreover, it is good also as a structure which overlaps the several uneven | corrugated pattern 11g in the thickness direction. For example, a radial pattern can be formed on the surface of the dial 11 and a satin pattern can be formed on the surface of the radial pattern.

  Further, a plurality of concavo-convex patterns 11 g may be formed in a direction parallel to the dial 11. For example, on the surface of the dial 11, inside the first small window 70, the second small window 80, and the third small window 90, a spiral pattern is formed extending from the respective centers, and outside the small windows It is also possible to form a radiation pattern extending from the center of the dial 11.

  As described above, according to the configuration according to the present modification, in addition to the effects of the first embodiment, the following effects can be obtained.

  According to this modification, since the concavo-convex pattern 11g is formed on the surface of the dial 11, it becomes possible to give the dial 11 a three-dimensional effect or a gloss according to the design. Improve the design of the

  Further, by forming the concave / convex pattern 11g, it is possible to give a light reflection effect and a light refraction effect to the dial plate 11 and make the notch 135g on the back side of the dial plate 11 inconspicuous.

  In addition, as shown in FIG. 16, you may make it form the uneven | corrugated pattern 11h in the back surface of the dial 11. FIG. When the concave / convex pattern 11h is formed on the back surface of the dial plate 11, the concave / convex pattern 11h cannot be directly visually recognized. Can be given. Further, the concavo-convex patterns 11 g and 11 h may be formed on both the front and back surfaces of the dial 11.

  In particular, a V-shaped groove as the concavo-convex pattern 11 h is formed in a spiral shape so as to spread from the center of the dial 11 on the back surface of the dial 11 so that the light reflection amount on the dial 11 is reduced It can be increased, and a metallic glossiness can be imparted which extends radially from the center of the dial 11. Thereby, the notch 135g can be made inconspicuous. At this time, the prism effect uses the difference in refractive index between the dial plate 11 and the air layer and the change of the incident angle of the light by the V-shaped groove to increase the ratio of the total reflected light to the incident light. It is used to let you.

  Moreover, you may make it the structure which combined multiple uneven | corrugated patterns 11g and 11h and the decoration layers 11e and 11f. By adopting a plurality of combination configurations, it is possible to give the dial 11 a change in color tone, visual effect, stereoscopic effect and glossiness that could not be expressed individually for the uneven patterns 11g and 11h and the decorative layers 11e and 11f. Furthermore, the design of the dial 11 can be improved.

(Modification 3)
Hereinafter, a configuration according to Modification 3 will be described. In addition, about the component same as 1st Embodiment, the same number is attached | subjected and the overlapping description is abbreviate | omitted.

FIG. 17 is a plan view of the dial 11 according to the third modification viewed from the back side. FIG. 17 is a plan view showing the appearance of a solar cell 135 according to Modification 3.
As shown in FIG. 17, the first region 11 c (colored portion 11 x) of the dial 11 according to the modified example 3 is different from the first embodiment in that it has a fan shape that radiates from the center of the dial 11. . Since the design of the dial plate 11 often has a pattern or visual effect that radiates from the center, when the colored portion 11x is fan-shaped, the colored portion 11x is visually recognized from the surface side of the dial plate 11. Even so, it can be included in the design of the dial 11.

  As shown in FIG. 18, the notch 135 g of the solar cell 135 may also have a fan shape that radiates from the center of the dial 11. With this configuration, even if the first region 11c has a relatively high light transmittance and the notch 135g of the solar cell 135 is visually recognized, it can be incorporated in the design of the dial 11 in the same manner. it can.

  As described above, according to the configuration according to this modification, in addition to the effects in the first embodiment, the following effects can be obtained.

  According to this modification, since the colored portion 11x has a fan-like shape, it is possible to suppress a decrease in design of the electronic timepiece 10 even if the colored portion 11x is viewed from the surface side of the dial 11.

  Further, when the shape of the cutout portion 135g is also a fan shape, the first region 11c has a relatively high light transmittance, and even if the cutout portion 135g of the solar cell 135 is visually recognized, the electronic timepiece It is possible to suppress the decrease in the design of ten.

Second Embodiment
Next, a second embodiment will be described with reference to FIG. 19 and FIG.

  FIG. 19 is a plan view of the date dial 130 and the date dial presser 131 as viewed from the front side in the electronic timepiece 10 according to the second embodiment, and FIG. 19 also shows the outlines of the antenna 110 and the solar cell 135. Has been. FIG. 20 is a partial cross-sectional view showing a cross section passing through the antenna body 110 and extending in the radial direction in the electronic timepiece 10 according to the second embodiment.

  As shown in FIGS. 19 and 20, in the present embodiment, the shape of the date indicator holder 131 for pressing the date indicator 130 is different from that of the first embodiment. The date holder 131 according to the present embodiment includes a base portion 131a having a substantially circular shape in a plan view, and an overhang portion 131g projecting outward beyond the outer periphery of the base portion 131a. The projecting portion 131g intersects with the date wheel 130 in a plan view and projects so that its tip reaches the vicinity of the dial receiving ring 126.

  The overhanging portion 131 g of the date dial 131 is provided so as to overlap the first area 11 c of the dial 11 in a plan view. Specifically, the projecting portion 131g is disposed inside the first region 11c so as not to protrude from the first region 11c in plan view, and the notch 135g of the solar cell 135 in which the antenna body 110 is disposed. It is formed in the shape which covers the whole area of. Thus, in the electronic timepiece 10 of the present embodiment, the date dial holder 131 has the protruding portion 131g that covers the notch portion 135g, so that the first region 11c of the dial 11 has a relatively high light transmittance. Even if it has, it can suppress that the notch part 135g of the solar cell 135 is visually recognized, and the antenna body 110, the date wheel 130, etc. which are arrange | positioned so that it may overlap with the notch part 135g by planar view are visually recognized. It can also be suppressed. Further, the date indicator 130 and date indicator holder 131 are parts generally used in the electronic timepiece 10, and even if the date indicator holder 131 has an overhang portion 131g, the date indicator 130 and date indicator holder 131 can be used. Compared with the other electronic timepiece 10 having, the thickness does not increase.

  As described above, according to the configuration according to the present embodiment, the following effects can be obtained in addition to the effects of the first embodiment.

According to this embodiment, since the date indicator holder 131 is configured to cover the notch 135g of the solar cell 135, the notch is provided even if the first region 11c has a relatively high light transmittance. 135 g can be made inconspicuous.
Further, the first, second, and third modifications of the first embodiment can be applied to the present embodiment, whereby the effects of the first, second, and third modifications can be obtained in addition to the effects of the present embodiment. it can.

  In the present embodiment, the electronic timepiece 10 has the date dial 130, and the configuration in which the notch 135g is covered with the member (date indicator press 131) that holds the date dial 130 is shown, but the present invention is limited to this configuration. Not. For example, when the electronic timepiece 10 is provided with a ring-shaped flat plate (day wheel) indicating the day of the week or a ring-shaped flat plate indicating the city name, the notch 135g is formed by a member that holds these flat plates. It is good also as a structure covered.

Third Embodiment
Next, a third embodiment will be described with reference to FIG. The electronic timepiece 10 of this embodiment is different from that of the first embodiment in that instead of coloring the back surface of the dial plate 11, a colored member is arranged integrally with the dial plate 11 on the back surface of the dial plate 11. Yes.

FIG. 21 is a partial cross-sectional view showing a cross section in the radial direction, passing through the antenna body 110, in the electronic timepiece 10 according to the third embodiment.
As shown in FIG. 21, the dial plate 11 of the present embodiment includes a first region 11i in which the first member 11y, which is a colored member, is disposed on the back surface, and a first region in which the first member 11y is not disposed on the back surface. 2 regions 11j. In the back surface of the second region 11j, a member having light transmittance and a color tone different from that of the first member 11y may be disposed.

  The first region 11i (first member 11y) has a substantially rectangular shape in plan view, like the notch 135g where the solar cell 135 is not disposed. The first region 11i (first member 11y) is arranged in a wider area than the notch 135g so as to cover the entire region of the notch 135g, and the peripheral portion of the first region 11i is It overlaps with the solar cell 135. That is, the solar cell 135 overlaps the second area 11 j of the dial 11 and a part of the first area 11 i. However, since the amount of light incident on the solar cell 135 is reduced when the range overlapping the solar cell 135 is widened, the size of the first region 11i takes into account errors during the arrangement or assembly of the first member 11y. It is desirable that the amount is wider than the notch 135g. Further, as described above, since the solar cell 135 has the notch portion 135g, the antenna body 110 has a region (exposed portion) that does not overlap with the solar cell 135 in plan view. At least the exposed portion of 110 overlaps the first region 11i in plan view.

  The first region 11i is configured to protrude downward from the second region 11j by the amount of the first member 11y arranged in a cross-sectional view, but is not limited to this configuration. For example, by arranging the first member 11y after processing the back surface of the dial 11 so that the first region 11i is thinner than the second region 11j, the first region 11i is more than the second region 11j. It may be configured not to protrude downward. That is, as long as the first region 11i is a region wider than the notch portion 135g, the first region 11i can be configured to have an arbitrary thickness in the thickness direction.

  The first member 11y is colored so as to have a color tone substantially the same as the color tone (dark purple) of the solar cell 135c of the solar cell 135 so that the notch 135g is not noticeable. However, since the first member 11 y is disposed in close contact with the dial 11 while the solar cell 135 is disposed close to the dial 11, the color tone of the first member 11 y is set to the solar battery 135. Even if the color tone is substantially the same as that of the first area 11i, it may be assumed that the first area 11i is noticeable when viewed from the front side of the dial 11. In this case, it is desirable to make the first region 11 i less noticeable by adjusting the color tone and light transmittance of the first member 11 y in advance. That is, the color tone of the first member 11y is not limited to the color tone substantially the same as that of the solar cell 135c of the solar battery 135, and may be any color tone that makes the notch portion 135g less noticeable when viewed from the surface side of the dial plate 11. The color of the first member 11y corresponds to the first color. Further, the first member 11y does not have to be light transmissive. Since it is assumed that most of the first region 11i overlaps the notch 135g, even when the first member 11y does not have light transparency, electric energy necessary for driving the electronic timepiece 10 is Can be secured. With the above configuration, the notch 135g is shielded by the first region 11i and is not easily noticeable.

  As in the present embodiment, in the configuration in which the first member 11y is disposed integrally with the dial 11 on the back surface of the dial 11, when the dial 11 is made of resin, the general forming process of the dial 11 is This can be achieved by changing to a two-color molding process. Moreover, it is also possible to form by methods other than two-color molding. For example, it may be insert molding.

  As described above, according to the configuration according to the present embodiment, the same effect as that of the first embodiment can be obtained.

  Further, when forming the dial 11 by two-color molding or the like, it is not necessary to greatly increase the number of steps as compared to the case where the back surface of the dial 11 is colored. Since 11 can be formed, the manufacturing cost can be reduced.

  Further, the first, second, and third modifications of the first embodiment can be applied to the present embodiment, whereby the effects of the first, second, and third modifications can be obtained in addition to the effects of the present embodiment. it can.

  DESCRIPTION OF SYMBOLS 8 ... GPS Satellite, 10 ... Electronic clock, 11 ... Dial plate, 11c, 11i ... 1st area | region, 11d, 11j ... 2nd area | region 11e, 11f ... Decoration layer, 11g, 11h ... Irregular pattern, 11x ... Colored part , 11y: first member, 12: projection, 13: central hole, 15: sun small window, 21, 22, 23: pointer, 25: pointer shaft, 30: outer case, 31: case, 32: bezel, 33 ... cover glass, 34 ... back cover, 35 ... city information, 40 ... dial ring, 45 ... time difference information, 46 ... time zone display, 50 ... crown, 61 ... A button, 62 ... B button, 63 ... C button, 64 ... D button, 70 ... first small window, 80 ... second small window, 90 ... third small window, 71, 81, 91 ... pointer, 92, 93 ... symbol, 110 ... antenna body, 120 ... circuit board, 122 ... Receiver, 125 ... Ground plate, 125 ... Convex part for guidance, 125b ... Convex part for determining the height of a character plate, 125c ... Pin for fixation, 125d ... Flange part, 125e ... Through hole, 125f ... 庇, 125g ... Notched part, 125k ... Protrusion, 126 ... Character Plate receiving ring, 126a ... Solar cell hook portion, 126f ... Ground plate receiving portion, 126m ... Projection portion, 130 ... Date indicator, 131 ... Date indicator holder, 131a ... Base portion, 131g ... Overhang portion, 135 ... Solar cell, 135b ... solar film, 135b-1, 135b-2 ... guide tab, 135c ... solar cell, 135d ... conduction part, 135e ... substrate, 135g ... notch part, 135h ... virtual outline, 140 ... drive mechanism, 150 ... control Part, 153: CPU, 154: RAM, 155: ROM, 157: input device, 159: data bus.

Claims (6)

A dial having light transparency and having a first region whose back surface is colored with a first color and a second region whose back surface is not colored with the first color;
A solar cell disposed on the back surface side of the dial and disposed so as to overlap a part of the first area and the second area in a plan view;
An antenna body disposed on the back surface side of the dial plate and disposed so as to at least partially overlap the first region and a region not overlapping the solar cell in plan view;
An electronic timepiece characterized by comprising:   The electronic timepiece according to claim 1, wherein at least one of the front surface and the back surface of the dial is covered with a light transmitting decorative layer.   The electronic timepiece according to claim 1 or 2, wherein a concavo-convex pattern is formed on at least one of the front surface and the back surface of the dial. In cross section, it has a dial holder which is disposed between the solar cell and the antenna body and has a function of pushing a dial.
The electronic timepiece according to claim 1, wherein the date dial holder is configured to cover an area that is the first area and does not overlap the solar cell.   The electronic timepiece according to any one of claims 1 to 4, wherein the first region has a fan-like shape that radially extends from the center of the dial. A dial having light transparency and having a first region in which the first member of the first color is disposed on the back surface and a second region in which the first member is not disposed on the back surface;
A solar cell disposed on the back surface side of the dial and disposed so as to overlap a part of the first area and the second area in a plan view;
An antenna body disposed on the back surface side of the dial plate and disposed so as to at least partially overlap the first region and a region not overlapping the solar cell in plan view;
An electronic timepiece characterized by comprising: